Dr. Hilarie Claire Tomasiewicz, MD, PhD
- Medicare services, 2024
- 87
- Medicare patients, 2024
- 68
- Part D claims, 2024
- 50
- Publications
- 5
- MIPS score, 2024
- 94
- Practice address
- 61 Whitcher NE St, Marietta, GA 30060
- Practice phone
- Call (470) 267-2433
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Wellstar Medical Group
Marietta, Georgia
Find Dr. Tomasiewicz's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Hilarie Claire Tomasiewicz is a neurosurgeon in Marietta, Georgia
Dr. Tomasiewicz practices at Wellstar Medical Group in Marietta, Georgia.
Dr. Tomasiewicz's NPI, 1841557444, was assigned on April 19, 2012. Dr. Tomasiewicz holds Georgia license 82673.
- NPI
- 1841557444NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1153668140
- NPI enumeration date
- April 19, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (470) 267-2433
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Hilarie Claire Tomasiewicz practices at Wellstar Medical Group in Marietta, Georgia
Dr. Tomasiewicz's primary practice is Wellstar Medical Group, at 61 Whitcher NE St, Marietta, GA 30060 in Cobb County. The practice phone is (470) 267-2433.
- Wellstar Medical Group61 Whitcher NE St, Marietta, GA 30060 · Cobb CountyPhone(470) 267-2433
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Hilarie Claire Tomasiewicz is affiliated with 7 sites of care and 2 medical groups
Dr. Tomasiewicz's primary practice is Wellstar Medical Group in Marietta, Georgia. Dr. Tomasiewicz is also affiliated with Wellstar Kennestone Regional Medical Center. The medical group on file is Wellstar Medical Group. Dmand AI also links Dr. Tomasiewicz to 4 more hospitals, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Hilarie Claire Tomasiewicz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tomasiewicz practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Wellstar Medical Group | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Hilarie Claire Tomasiewicz is one of 210 neurosurgeons in Georgia
Neurological surgery is Dr. Tomasiewicz's primary specialty in the NPI Registry, under taxonomy code 207T00000X. Dmand AI has Dr. Tomasiewicz's licenses on file in 2 states: Georgia and New York.
Specialties and state licenses
- Neurological surgery, GeorgiaPrimary
- New York license
Neurosurgeons near Dr. Tomasiewicz
Counts of neurosurgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Hilarie Claire Tomasiewicz billed Medicare for 87 services in 2024
CMS data shows 87 Medicare services from Dr. Tomasiewicz across 3 procedure codes in 2024, for 68 Medicare patients. Medicare paid $6,653 for them.
Dr. Tomasiewicz's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 262024: 87235%
Where Dr. Tomasiewicz's Medicare services took place, 2024
- In an office1618%
- In a facility7182%
Dr. Tomasiewicz compared with the Georgia median for neurosurgeons, 2024
- Dr. Tomasiewicz
- Georgia median
- Medicare services
- 87vs 25165% below
- Medicare patients
- 68vs 16358% below
- Part D claims
- 33vs 10869% below
Medians across 197 neurosurgeons in Georgia with Dmand AI profiles that report each measure.
Dr. Tomasiewicz's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tomasiewicz and other neurosurgeons in Georgia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Hilarie Claire Tomasiewicz treated 68 Medicare patients in 2024, average age 76
CMS counts 68 Medicare patients who saw Dr. Tomasiewicz in 2024. The largest group is 75 to 84, with 28 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.71, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Tomasiewicz's median patient age at 71, with 46% women.
Dr. Tomasiewicz's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Tomasiewicz's Medicare patients by sex, 2024
- Women3146%
- Men3754%
Chronic conditions among Dr. Tomasiewicz's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis60%
- Stroke or TIA53%
- Mood disorders43%
- Anxiety40%
- Depression40%
- Diabetes40%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tomasiewicz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women46%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Hilarie Claire Tomasiewicz wrote 50 Medicare Part D claims in 2024
In 2024, Dr. Tomasiewicz wrote 50 Medicare Part D claims for 21 patients. 100% of them were for generic drugs. CMS names the drug for 33 of them, across 2 drugs with 11 or more claims each, at $133 in total drug cost.
Dr. Tomasiewicz's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Tomasiewicz's Part D claims, 2024
- Opioids28%14 of 50 claims
- Antibiotics54%27 of 50 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Hilarie Claire Tomasiewicz scored 94 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 94 out of 100 for Dr. Tomasiewicz for performance year 2024, reported through an alternative payment model (APM). Dr. Tomasiewicz accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Tomasiewicz's MIPS scores, performance year 2024
- 94of 100Final score
- 82.1of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Hilarie Claire Tomasiewicz has 5 publications on record
Dmand AI links 5 papers to Dr. Tomasiewicz, published from 2012 to 2020. 2012 was the busiest year, with 2. Dr. Tomasiewicz's most frequent co-authors are Jonathan Andrew Forbes, MD, Clifford Douglas Phillips, MD and Theodore H. Schwartz, MD.
Dr. Tomasiewicz's papers by year, 2012 to 2020
Dr. Tomasiewicz's most frequent co-authors
- Jonathan Andrew Forbes, MD2 shared papers
- Clifford Douglas Phillips, MD2 shared papers
- Theodore H. Schwartz, MD2 shared papers
Recent publications by Dr. Tomasiewicz
See who Dr. Tomasiewicz researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Tomasiewicz works with, so you can find a warm path to the right neurosurgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Hilarie Claire Tomasiewicz received $22,954 in industry payments from 2019 to 2025
CMS Open Payments shows 71 general payments to Dr. Tomasiewicz from 9 drug and device companies from 2019 to 2025. Grants make up the largest share, 65% of the total. Medtronic USA, Inc. paid the most, $17,260.
General payments to Dr. Tomasiewicz by program year, 2019 to 2025
General payments to Dr. Tomasiewicz by kind, 2019 to 2025
- Grants$15,00065%
- Food and beverage$4,10318%
- Travel and lodging$3,49215%
- Education$3592%
Companies that paid Dr. Tomasiewicz the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Hilarie Claire Tomasiewicz's profile data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Hilarie Claire Tomasiewicz
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Hilarie Claire Tomasiewicz's NPI number?
Dr. Hilarie Claire Tomasiewicz's NPI number is 1841557444. It was assigned on April 19, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Hilarie Claire Tomasiewicz?
Dr. Hilarie Claire Tomasiewicz is a neurosurgeon in Marietta, Georgia. The primary specialty in the NPI Registry is Neurological Surgery Physician (taxonomy code 207T00000X).
Where does Dr. Hilarie Claire Tomasiewicz practice?
Dr. Tomasiewicz practices at 61 Whitcher NE St, Marietta, GA 30060. Dr. Tomasiewicz's primary practice is Wellstar Medical Group in Marietta, Georgia. Dmand AI also links Dr. Tomasiewicz to 4 hospitals, 1 group practice or clinic and 1 medical group.
What is Dr. Hilarie Claire Tomasiewicz's office phone number?
The practice phone on file for Dr. Tomasiewicz is (470) 267-2433.
What is Dr. Hilarie Claire Tomasiewicz's medical license number?
Dr. Tomasiewicz holds Georgia license 82673, one of the licenses on file in 2 states.
Which states has Dr. Hilarie Claire Tomasiewicz been licensed in?
Dmand AI has state licenses on file for Dr. Tomasiewicz in Georgia and New York.
Which hospitals is Dr. Hilarie Claire Tomasiewicz affiliated with?
Dr. Tomasiewicz is affiliated with Wellstar Kennestone Regional Medical Center. Dmand AI links Dr. Tomasiewicz to 4 more hospitals.
What medical group is Dr. Hilarie Claire Tomasiewicz part of?
Dr. Tomasiewicz is linked to Wellstar Medical Group. Dmand AI links Dr. Tomasiewicz to 1 more medical group.
Does Dr. Hilarie Claire Tomasiewicz accept Medicare?
Yes. CMS data shows Dr. Tomasiewicz billed Medicare for 87 services in 2024, and Dr. Tomasiewicz accepts Medicare assignment.
What is Dr. Hilarie Claire Tomasiewicz's MIPS score?
Dr. Tomasiewicz's MIPS final score for performance year 2024 is 94 out of 100, reported through an alternative payment model (APM).
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How many Medicare patients does Dr. Hilarie Claire Tomasiewicz see?
CMS counts 68 Medicare patients who saw Dr. Tomasiewicz in 2024, with an average age of 76.
What services does Dr. Hilarie Claire Tomasiewicz bill to Medicare?
In 2024, Dr. Tomasiewicz's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99222) and office visit, established patient (99213).
What drugs does Dr. Hilarie Claire Tomasiewicz prescribe most?
In 2024 Medicare Part D data, Dr. Tomasiewicz's most prescribed drugs by claims were Sulfamethoxazole-Trimethoprim and Hydrocodone-Acetaminophen.
Has Dr. Hilarie Claire Tomasiewicz received payments from drug or device companies?
CMS Open Payments shows $22,954 in general payments to Dr. Tomasiewicz from 9 companies from 2019 to 2025. The largest total came from Medtronic USA, Inc.
How long has Dr. Hilarie Claire Tomasiewicz been practicing?
Dr. Tomasiewicz graduated from medical school in 2012, 14 years ago.
Does Dr. Hilarie Claire Tomasiewicz do research?
Dmand AI links 5 publications to Dr. Tomasiewicz, published from 2012 to 2020.
Who does Dr. Hilarie Claire Tomasiewicz publish with?
Dr. Tomasiewicz's most frequent co-authors are Jonathan Andrew Forbes, MD (2 shared papers), Clifford Douglas Phillips, MD (2 shared papers) and Theodore H. Schwartz, MD (2 shared papers).
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